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Posts for: WaltR
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Sep 22, 2023 14:52:53   #
[quote=frjeff]Definitely NOT a fan.
I also agree fully. This is a real disimprovement! Revoke the changes, please.
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Sep 13, 2023 20:14:08   #
Thanks, Walt.
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Sep 13, 2023 13:17:13   #
http://www.rangscapes.net/birds/gullfamilyd.php
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May 18, 2022 14:55:52   #
See:

https://www.rangscapes.net/birds/indexbirds.html
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Feb 15, 2022 11:04:40   #
therwol wrote:
Have you tried focus stacking?


f16 is waaay quicker and much easier. I often shoot on the run and there would be no time to set my camera for a focus stack.
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Feb 15, 2022 11:01:56   #
kymarto wrote:
This works absolutely fine for most purposes. One of my favorite lenses for closeup work is a 35mm lens from the 60s. As long as you are not trying to photograph flat objects with edge to edge sharpness it won't matter much.


Sony RX1 Rii, 42mp, full frame, fixed 35mm. Small camera was my favorite for a long time. I took several thousand flower shots, very close, filling the frame over a couple of years. Great little camera at the time. No one seems to have even heard of it!

It still works great and I now mostly use it when I need to shoot very discreetly. It is small and quick.
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Feb 14, 2022 19:01:02   #
Thank you all once again. Interesting. My question was more intellectual than practical. I use my 110mm and 90mm without caring if they are macro or not. I shoot 90% at f16, probably 5% at f22 and 5% at f11. one in 500 outside of that range. I often want closeups of flowers and MFD can be important, and DOF is always important for me. Bokeh is not in my vocabulary.
Also, since I process everything through rather amazingly good noise and sharpening routines, this all adds up to "It doesn't matter" if they are macro or not. But, this is the way I work, simple mindedly. your needs may be more sophisticated.
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Feb 12, 2022 14:28:06   #
My Fuji 110mm f2.0 non-macro will focus down to 3 ft. My Pentax 90mm f2.8 Macro will focus down to 1.4 ft.
Other than that, they both deliver about the same great quality everywhere. No real difference. But then, I am not shooting circuit boards.
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Feb 12, 2022 14:22:13   #
Ysarex wrote:
A simple lens will focus on a curved external plane and project the image to a curved surface -- inside of a bowl. Film and sensors are flat. The lens becomes more complex as the designers work to overcome this and other problems. Complicating the flat field issue is the fact that it's variable over focus distance. Now shooting a landscape our requirement to have the lens focus on a flat plane and project a flat image is less strict than say photographing a printed circuit board. We always want the best of everything but lens design is a compromise. Another lens feature that we often desire is a large maximum aperture -- all lenses should be at least f/1.4, right? But increasing a lens maximum aperture makes it immensely more difficult to get the lens to do an excellent job elsewhere like projecting a flat image.

So a macro lens is one in which the designers have biased their design compromises toward best performance in the close-up to macro focusing range. You also want it to be f/1.4? Well you can't have it -- that was one of the design compromises. Are you going to lose shooting landscapes? No because your requirement for field flatness is less strict and you're not going to see a problem if the lens at long distances is beginning to focus on a slightly curved plane.

I have a 90mm macro lens with a maximum aperture of f/4. I understand why the designers didn't make it f/2.8 or f/2 and what I'm gaining in exchange. It's one of the best lenses I've ever owned.
A simple lens will focus on a curved external plan... (show quote)
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Feb 12, 2022 13:11:00   #
Thanks all! I this this pretty much boils down to aperture and minimum focal distance. I'm not hearing of any loss otherwise. Except maybe, if I can get close, I must bend the knee! Thanks again.
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Feb 12, 2022 11:42:43   #
I have a 90mm Macro Prime.

I presume that its design to focus relatively near, and its special designation “macro”, means that I give up something on the other end, for distant objects? What do I lose with a macro?

Or, does it only mean that it is a more sophisticated design and is going to cost a little more?

I have had several macros over the years and have never noticed anything different except the near focus.
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Aug 1, 2020 09:43:45   #
Last two really hit it. Didn't know there is no glass in ftz adaptor. And then experience added in. Question answered. Many thanks.
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Jul 31, 2020 19:09:08   #
I'm dealing in the realm of extreme sharpness, color true, and overall picture quality. Just a similar "pretty" a picture doesn't cut it for me. Thanks, but experience is the only way to know.
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Jul 31, 2020 15:41:40   #
thanks.
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Jul 31, 2020 14:49:04   #
Question: How does F-glass on Z-camera (with adaptor) image quality compare to F-glass on F-camera?
I am reasonably sure Z-glass on Z-camera is notable better, but how much do I lose compared to my previous work on F-camera, if anything, by using F-glass on new Z-camera?
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